<!DOCTYPE html>
<html>
	<head>
		<link rel="stylesheet" href="./css/背景动画样式.css">
		<meta charset="utf-8">
		<title>背景动画</title>
	</head>
	<body>
		<div class="cotton"></div>
		<div class="heart"></div>
		<div class="dog"></div>
		<div class="hudie"></div>
		
		
		
	</body>
</html>